Walmart is rolling out unlimited grocery delivery for a $98 fee to 1,600 stores nationwide

The service will be available in more than 1,600 stores, reaching more than 50% of the US, by the end of the year, the company said Thursday.

Walmart typically charges customers a grocery delivery fee of $7.95 to $9.95 per order.

The new service, called Delivery Unlimited, allows customers to avoid the per-order fee and instead pay a flat charge of $12.95 monthly or $98 annually.

Walmart also offers free curbside pickup for online grocery orders at 3,000 stores.

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The company said it relies on more than 45,000 personal shoppers to fulfill its grocery pickup and delivery orders.

Delivery Unlimited provides a cheaper option for Walmart customers who want to order groceries for delivery more frequently than once a month.

For other customers, Walmart will continue to offer the option of paying a per-order fee.

The cost of Delivery Unlimited is competitive with other similar options, such as Shipt and Instacart, which are both $99 annually.

Amazon Prime is considerably more expensive, at $119 annually, but it offers more than unlimited grocery deliveries. Prime also includes free delivery on millions of non-grocery items and access to Prime Video, ebooks, and more.